I have not heard the Stellia, but own the Focal Elex and have heard the Utopia. The Elex are one of my favorites, but are not closed back.
Of the closed back headphones I own, the Sony MDR-Z1R are my favorites. They sound almost as good as my LCD-4 and are super comfortable. The LCD-XC is also a very nice closed back headphone, but they are pretty heavy.
Obviously the best thing you can do is go audition some different headphones, but I realize that's not always easy. Check out Head-fi.org and innerfidelity.com for lots of reviews.
Of the closed back headphones I own, the Sony MDR-Z1R are my favorites. They sound almost as good as my LCD-4 and are super comfortable. The LCD-XC is also a very nice closed back headphone, but they are pretty heavy.
Obviously the best thing you can do is go audition some different headphones, but I realize that's not always easy. Check out Head-fi.org and innerfidelity.com for lots of reviews.